Kynar® 370 America

Alternative and trade names
PVDF
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Description

Kynar® resins are fluorinated thermoplastic homopolymers.

Kynar® 370 resin is a thermoplastic fluorinated polymer resin. The properties are the same as standard grade: chemical resistance, resistance to UV, low permeation, high purity, excellent mechanical behavior with a higher HDT. This grade is especially modified in order to have a reduced mold shrinkage, low thermal expansion factor. Moreover, this grade has an increased thermal and electrical conductivity. This grade is available as pellet form for injection, extrusion, compression.

This material data has been provided by Arkema High Performance Polymers.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValueComment

Coefficient of friction, kinetic

0.12 [-]

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ASTM D1894, vs Steel

Coefficient of friction, static

0.18 [-]

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ASTM D1894, vs Steel

Density

23.0 °C

1.84 - 1.88 g/cm³

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ASTM D792

Limiting oxygen index

23.0 °C

44 %

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ASTM D2863

Mechanical

PropertyTemperatureValueComment

Compressive strength

23.0 °C

138 - 172 MPa

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ASTM D695

Elastic modulus

23.0 °C

3.1 - 5.17 GPa

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ASTM D638

Elongation

23.0 °C

0 - 20 %

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ASTM D638

Elongation at yield

23.0 °C

0 - 4 %

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ASTM D638

Flexural modulus

23.0 °C

5.52 - 6.89 GPa

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ASTM D790

Hardness, Shore D

23.0 °C

74 - 79 [-]

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ASTM D2240

Impact strength, Charpy notched, ASTM

23.0 °C

40 - 80.1 J/m

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ASTM D256

Impact strength, Charpy unnotched, ASTM

23.0 °C

267 - 534 J/m

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ASTM D256

Tensile strength

23.0 °C

37.9 - 55.2 MPa

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ASTM D638

Yield strength

23.0 °C

34.5 - 55.2 MPa

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ASTM D638

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

3.6E-5 - 4.5E-5 1/K

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ASTM D696

Glass transition temperature

-40.6 - -38.3 °C

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ASTM D7028

Heat deflection temperature, 0.45 MPa

132 - 149 °C

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ASTM D648, 248 °F/hr

Heat deflection temperature, 1.80 MPa

110 - 127 °C

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ASTM D648, 248 °F/hr

Melting point

165 - 170 °C

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ASTM D3418

Thermal decomposition in air

375 °C

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TGA, 1% wt. loss

Thermal decomposition in nitrogen

410 °C

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TGA, 1% wt. loss

Flammability

At thickness 1.6 mm IEC 60695-11-10: V-0, At thickness 0.8 mm IEC 60695-11-10: V-0

Electrical

PropertyTemperatureValueComment

Dielectric constant, 1KHz

23.0 °C

28.8 - 33.5 [-]

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ASTM D150

Dissipation factor, 100kHz

23.0 °C

0.06 - 0.08 [-]

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ASTM D150

Volume resistivity

23.0 °C

1.00E+11 Ω·cm

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ASTM D257, 65% RH

Rheological Properties

PropertyTemperatureValueComment

Density of melt

1.88 g/cm³

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Melt mass-flow rate

5 - 17 g/10min

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ASTM D1238, 230°C/3.8kg

Melt viscosity

23.0 °C

800 - 1300 Pa·s

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ASTM D3835

Technological properties

Property
Application areas

Chemical Process Industry

Processing methods

Injection Molding:

  • Melt temperature (°C) ISO 294: 230
  • Mold temperature (°C) ISO 10724: 90
  • Injection velocity (mm/s) ISO 294: -
  • Pressure at hold (MPa) ISO 294: -